Go Back  Bike Forums > Bike Forums > Fifty Plus (50+)
Reload this Page >

Tread thickness

Notices
Fifty Plus (50+) Share the victories, challenges, successes and special concerns of bicyclists 50 and older. Especially useful for those entering or reentering bicycling.

Tread thickness

Old 04-10-12, 04:23 PM
  #1  
TomD77
Senior Member
Thread Starter
 
TomD77's Avatar
 
Join Date: Jul 2010
Location: Florida Panhandle
Posts: 572
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Tread thickness

Today I replaced a 'squared off" Gator HardShell with close to 2300 miles with a new one. Didn't figure that another 15%-20% of mileage would be worth an episode or two of standing beside the road while replacing a tube.

Using a micrometer I measured the thickness of the old and new tire and found that the old tire is .102" thick at the contact point and the new is .144. Assuming typical Germanic consistency (Continental Tire), the tire was mostly clapped out with a tread wear of 42 thousandths of an inch (.042"). And that's a relatively heavy tire!

Not much tread on these tires. And they say to replace your car tire when it gets to the thickness of a penny. That's about triple the tread depth of a new bike tire.
TomD77 is offline  
Old 04-10-12, 04:48 PM
  #2  
DnvrFox
Banned.
 
DnvrFox's Avatar
 
Join Date: Aug 2001
Posts: 20,917
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 9 Times in 7 Posts
Bike tires do not hydroplane, and, for a road bike, no "tread" is necessary. In fact, many believe a smooth tire with no tread performs better, including "traction".
DnvrFox is offline  
Old 04-10-12, 05:41 PM
  #3  
TomD77
Senior Member
Thread Starter
 
TomD77's Avatar
 
Join Date: Jul 2010
Location: Florida Panhandle
Posts: 572
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by DnvrFox View Post
Bike tires do not hydroplane, and, for a road bike, no "tread" is necessary. In fact, many believe a smooth tire with no tread performs better, including "traction".
Sorry, didn't make myself clear, didn't mean tread per se but rubber covering over the tire cords.
TomD77 is offline  
Old 04-10-12, 05:56 PM
  #4  
Phil85207
Century bound
 
Phil85207's Avatar
 
Join Date: Jan 2010
Location: Mesa Arizona
Posts: 2,262

Bikes: Felt AR4 and Cannondale hybrid

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Likes: 0
Liked 2 Times in 1 Post
I think you did the right smart thing changing when you did. Some people like to squeeze the last mile out of a tire and could wind up on the side of the road with a blow out and have to boot the tire to get back. You could ask me how I know. LOL.
Phil85207 is offline  
Old 04-10-12, 07:02 PM
  #5  
Looigi
Senior Member
 
Looigi's Avatar
 
Join Date: Dec 2010
Posts: 8,951
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 14 Post(s)
Likes: 0
Liked 11 Times in 10 Posts
Welllll, I always ride mine down till the cords start showing, pretty much. The last tire I replaced hadn't quite gotten down to the cords when it got a ~3/8" cut in the sidewall on a recent ride. Drat.
Looigi is offline  
Old 04-10-12, 07:33 PM
  #6  
Dudelsack 
A might bewildered...
 
Dudelsack's Avatar
 
Join Date: Oct 2011
Location: Loovul in summer. Jensen Beach in Winter.
Posts: 6,623

Bikes: Bacchetta Giro ATT 26; Lemond Buenos Aires; Trek/Electra Townie Mega E bike.

Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 131 Post(s)
Liked 71 Times in 32 Posts
I'm convinced that when we're all dead and gone, victims of the Zombie Apocalypse, that my Schwalbe Marathon tires will still have plenty of tread on them.
__________________
Brevity is the soul of wit.



Dudelsack is offline  
Old 04-10-12, 07:48 PM
  #7  
roccobike
Bike Junkie
 
roccobike's Avatar
 
Join Date: Jun 2005
Location: South of Raleigh, North of New Hill, East of Harris Lake, NC
Posts: 9,600

Bikes: Specialized Tarmac, Specialized Roubaix, Giant OCR-C, Specialized Stumpjumper FSR, Stumpjumper Comp, 88 & 92Nishiki Ariel, 87 Centurion Ironman, 92 Paramount, 84 Nishiki Medalist

Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 62 Post(s)
Likes: 0
Liked 22 Times in 18 Posts
You may be over-thinking this tire replacement thing. I buy top quality tires, then run them into the ground or until they are not reasonable to ride due to cuts. If I haven't had a problem with cuts, I ride them until the first signs of the casing begining to show.
__________________
Roccobike BF Official Thread Terminator
roccobike is offline  
Old 04-10-12, 11:56 PM
  #8  
stapfam
Time for a change.
 
stapfam's Avatar
 
Join Date: Jan 2004
Location: 6 miles inland from the coast of Sussex, in the South East of England
Posts: 19,913

Bikes: Dale MT2000. Bianchi FS920 Kona Explosif. Giant TCR C. Boreas Ignis. Pinarello Fp Uno.

Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Likes: 0
Liked 4 Times in 3 Posts
The thinner the rubber and the easier it is for "Foreign objects to penetrate. Never measured the depth left on tyres when I change them but they feel pretty thin when I do. Just got rid of a couple of NEW OM tyres that came on the Pinnie as the amount of rubber on them from new was less than I would have on a used tyre when it is discarded. Reason for getting them off the bike was 2 punctures in one ride.
__________________
How long was I in the army? Five foot seven.


Spike Milligan
stapfam is offline  
Old 04-11-12, 07:09 AM
  #9  
qcpmsame 
Semper Fi
 
Join Date: Jan 2008
Posts: 12,911
Mentioned: 88 Post(s)
Tagged: 0 Thread(s)
Quoted: 1160 Post(s)
Liked 319 Times in 214 Posts
I suppose the engineer gene in me is what makes me change tires as you do Tom. I use visual inspections for daily judgement, looking for cuts early on, and later measure them when I service the wheel set. I can't ride a really worn tire to save me. they don't cost much and I really hate walking and/or carrying a bicycle.

Bill
__________________
Semper Fi, USMC, 1975-1977

I Can Do All Things Through Him, Who Gives Me Strength. Philippians 4:13


qcpmsame is offline  
Old 04-11-12, 07:16 AM
  #10  
DnvrFox
Banned.
 
DnvrFox's Avatar
 
Join Date: Aug 2001
Posts: 20,917
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 9 Times in 7 Posts
Originally Posted by qcpmsame View Post
I suppose the engineer gene in me is what makes me change tires as you do Tom. I use visual inspections for daily judgement, looking for cuts early on, and later measure them when I service the wheel set. I can't ride a really worn tire to save me. they don't cost much and I really hate walking and/or carrying a bicycle.

Bill
+1

Peace of mind is worth much more to me than riding an extra 500 miles on an "iffy" tire.
DnvrFox is offline  
Old 04-11-12, 07:19 AM
  #11  
qcpmsame 
Semper Fi
 
Join Date: Jan 2008
Posts: 12,911
Mentioned: 88 Post(s)
Tagged: 0 Thread(s)
Quoted: 1160 Post(s)
Liked 319 Times in 214 Posts
Agreed, to each their own I suppose.

Bill
__________________
Semper Fi, USMC, 1975-1977

I Can Do All Things Through Him, Who Gives Me Strength. Philippians 4:13


qcpmsame is offline  
Old 04-11-12, 07:39 AM
  #12  
StanSeven
Administrator
 
Join Date: Feb 2005
Location: Delaware shore
Posts: 13,505

Bikes: Cervelo C5, Guru Photon, Waterford, Specialized CX

Mentioned: 15 Post(s)
Tagged: 0 Thread(s)
Quoted: 999 Post(s)
Liked 1,556 Times in 1,079 Posts
I buy tires on sale and have extras around. The less thread, the greater the chance of flats. So I replace them probably well before I really need to but I also had only one flat in the last year.

Some tires get superficial cuts easily like Michelin, Conti, and a few models Specialized. These really don't do anything and mostly are related to the softer compound.

BTW, I use mostly Conti GP 4000 and they have wear indicator holes on the thread.
StanSeven is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
number1bike
Bicycle Mechanics
10
05-28-19 07:39 PM
PoorBob
Bicycle Mechanics
22
06-22-17 09:45 AM
wilfried
Bicycle Mechanics
17
10-18-16 11:20 AM
mgb
Bicycle Mechanics
42
11-22-12 09:54 AM
yaegervette
Road Cycling
33
06-29-11 08:02 PM

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell or Share My Personal Information -

Copyright © 2023 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.